Dave,
Great Point is almost always hot. Fish right in the rips. You can get Blues, Bass or drift for Fluke. Also you might want to try just off the Sankaty light. Anywhere from 50 yard off the beach, out to the Quidnet rip which is about 2 miles offshore. You'll find big Blues and Striped Bass down deep. Another spot to try, is Old Man Shoals which is off the loran towers at Tom Nevers (southeast corner of the island). Have fun and good luck!